The Olenyok River (Russian: Оленёк, sometimes spelled Olenek) is a major river in northern Siberian Russia, west of the lower Lena River and east of the Anabar River. It is 2,292 kilometres (1,424 mi) long, of which around 1,000 kilometres (620 mi) is navigable. Average water discharge is 1,210 cubic metres per second (43,000 cu ft/s).